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JGJ81-2002 Welding Technical Regulations for Architectural Steel Structures (Part 14)
Welding processes
Welding processes used in construction steel structures can be divided into three categories: manual welding, mechanical welding and self-shielding welding.
Manual welding is one of the most commonly used welding processes. It can be used for both mild steel and stainless steel......
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Manufacturing method and delivery status of seamless steel pipes for high-pressure chemical fertilizer equipment (GB 6479-2000)
GB 6479-2000
Seamless Steel Pipes for High Pressure Fertilizer Equipment Manufacture and Delivery State
This standard deals with the seamless steel pipes that are used in high pressure fertilizer equipment, specifying the requirements and delivery states of the pipes.
1. Scope
This standard spe......
GB/T 222-1984 Sample sampling method for chemical analysis of steel and allowable deviation of chemical composition of finished product
GB/T 222-1984 specifies the sampling method for the chemical analysis of steel and the permissible deviations for chemical composition of finished products.
The purpose of this standard is to provide technical requirements for the sample method of chemical analysis of steel, and the permissible d......
straightness
Straightness is a measure of how straight an object is, usually compared to a theoretical straight line. In metrology, straightness is an important characteristic of linear dimension. An object’s straightness can change over time due to external factors such as temperature, humidity, and force.
......
Methods of sampling samples for chemical analysis of steel
Chemical Analysis of High-Speed Steel by Sample Taking Method
High-speed steel (HSS) is a type of tool steel that is used in the production of cutting tools due to its ability to withstand intense high speed use. It is resistant to wear and further strengthens when heated. Its chemical compositio......
Test method for strain aging sensitivity of steel (Charpy impact method) GB 4160-84
Introduction
Xiebisheng test is a common tool used in among metallographers. It is a specially studied impact test which is capable of telling the user stress-strain sensitiveness of particular materials. In this test, a sample of material is evaluated for its property of sensitizing to strain an......
Baosteel continuous casting billet
Continuous casting of steel is an extremely important process, utilizing extraordinary engineering and philosophy. This process, which is ever-growing in capability, produces steel slabs, blooms, billets, or strands, in virtually any size you require. Although up until now, steel casted from this ......
Construction project supervision specification (GB50319-2000)
Chinese Construction Project Supervision Standard (GB50319-2000)
China has experienced a dramatic shift in its labor force and economy in the last few decades. This shift has necessitated the adoption of stricter and more comprehensive regulations, standards, and guidelines for China’s construc......
Welding process standard for steel structure manual arc welding
Standard Operating Procedures for the Manual Arc Welding of Structural Steel
1. Introduction
Arc welding is a process that involves joining two pieces of metal by using an electric arc to melt base materials together. Structural steel is commonly used in the construction of building and other st......
GB 8650-88 Test method for resistance to stepped cracking of pipeline steel
GB 8650-88 provides a method for a fracture test that assesses the ability of steel pipelines to withstand different conditions. This test involves a pipe filled with water, the pressure of which is gradually increased. At each stage, the pipe is blocked off, and then examined afterwards to see if......
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